Automatic disk sharpener



Oct. 6, 1931. J. KL CKNE ET AL AUTOMATIC DISK SHARPENER 2 Sheets-Sheet 1Filed July 26, 1930 N fv Q k N N rIL U Q w v Oct. 6, 1931.

J. KLQCKNER ET AL AUTOMATI C DISK SHARPENER 2 Sheets-Sheet 2 Filed July26, 1950 ATTORNEY or detached from 'els along,

Patented a. 6, 1931 UNITED oan KLOCKNERQSOIFTELKHORN, AND ELZA E.amounts, or OMAHA, NEBnAsxA, AS-- SIGNORS mo kLocxNER rHoMAsMANUFACTURING NEBRASKA a j imitation nid' Jul *26,

of the invention beingto provide means for sharpening the disks as theimplement travwith means whereby the sharpening means canbe easily andquickly attached to the "implement.

' This invention also consists in certain other features of constructionandin the combina-' tion and arrangement of the several parts, to behereinafter fully described, illustrated in I the accompanying drawingsand specifically pointed out in the appended claim.

In describing the invention in detail, ref erence will be had to theaccompanying drawings wherein like characters denote like orcorresponding partsthroughout the several views, and in which 1 I Figure1 is an elevation, of a portion of an implement, showing theinventionthereon.

I Figure 2' is a section on line-2+2 of Fig-. ,"urelp T I Figure 8 isasection on line 3-3 of V Fig ure 1. I

" 'Figure 4 is asection on line 14of'Fig- Figure 5 is a section on line5 5 of Figure .4; I e In these views, thenumeral 1 indicates a bar offlat construction to which the arms 2 r are pivoted by the bolts 3, eachbolt having a cylindrical part 3 which fits in a circular hole in thebar with its end reduced and end of each arm,

- threaded in a hole in the arm. Each arm is an'angle so that the lowertwisted and bent at end of each arm is diagonally arranged and acasing-like clamp 4 is fastened tothe lower these clamps holding thesharpening stones 5 of-any suitable material.

. A-stud 6' is threaded'through the lower part ofeach armabove the"clampand a wing nut.

7 is placed on each stud. spring 8 hasone end fastened in an eye in'thestud and its other end fastened to Lthe bar so that these springs holdthe arms in a positionf with scope of the appended claim.

AUTOMATIC DISK" SHARPENER 1930. Serial in. 470,960.

the stones engaging the disks a of the harrow or other disk carryingimplement A.

' The bar is detachably connected with the implementby the 'U-shapedmembers 9 fastened to the bar and fitting over'a bar 10 of theimplement, with the bolts 11 clamping the members 9 to the bar 10. Thusit will be seen that the device can be easily and quickly attached tothe implement by the clamping members 9 and their bolts 11 and that thet5 springs 8 will yieldingly hold the stones against the edges of thedisks so that as the implement travels along, the stones will sharpenthe disks. After the disks are properly sharpened, the device is removedfrom fm the implement.

, disks are sharpened While in the implement and asthe implement travelsalong. The 85 stones can be easily removed when worn and replaced by newones. The drawings show the device arranged for right hand disks,'but itwill, of course, be understood that the device would simply be" reversedfor left hand disks. The stones are made with a bevel to conform to theshape of the disks. The bolt which connects each arm to the bar allowsfree action of the arm so that if an obstruction should strike the 7arm, the same can swing upwardly and thus free itselfof the obstruction.It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent. E'80 It is tobe understood that changes may be jmade in the construction and in thecombination and arrangement of the several parts, provided that suchchanges fall within the What we claim is The combination of a bar havingclips for adjustable and detachable engagement with a gang frame ofgrouped disks, arms pivoted'on the bar and depending between thefree endgoffthe' extenslon and operative against the .disk'a'djacent thereto,acoiledten- 4 'si oningspring atta'ehedto' the bar. spaced from-thearmandadjn'stebly connected" with t the extension, andwingedboltsfotming the I adjustable connection of the springs with theextension. t v T In testimony whereof We aflix' our signa- 1 l I Q 1 I}1: Q f I JOHN KLOCKNERI e P Y ELZA E. THOMAS. .e

